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参数资料
| 型号： | NCP59302DSADGEVB |
| 厂商： | ON Semiconductor |
| 文件页数： | 8/10页 |
| 文件大小： | 0K |
| 描述： | BOARD EVALUATION NCP59302 REG |
| 设计资源： | NCP59302 BOM NCP59302DSADGEVB Schematic NCP59302DSADGEVB Gerber Files |
| 标准包装： | 1 |
| 每 IC 通道数： | 1 - 单 |
| 输出电压： | 2.5V |
| 电流 - 输出： | 3A |
| 稳压器类型： | 正，可调式 |
| 工作温度： | -40°C ~ 125°C |
| 板类型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | NCP59302 |
| 其它名称： | NCP59302DSADGEVBOS |
NCP59302, NCV59302
APPLICATIONS INFORMATION
V IN
V OUT
R1
Output Capacitor and Stability
The NCP59302 device requires an output capacitor for
stable operation. The NCP59302 is designed to operate with
ceramic output capacitors. The recommended output
capacitance value is 47 m F or greater. Such capacitors help
to improve transient response and noise reduction at high
frequency.
Input Capacitor
An input capacitor of 1.0 m F or greater is recommended
when the device is more than 4 inches away from the bulk
supply capacitance, or when the supply is a battery. Small,
surface ? mount chip capacitors can be used for the
bypassing. The capacitor should be place within 1 inch of
the device for optimal performance. Larger values will help
Adjustable Voltage Design
The NCP/NCV59302 Adjustable voltage Device Output
voltage is set by the ratio of two external resistors as shown
in Figure 21.
The device maintains the voltage at the ADJ pin at 1.24 V
referenced to ground. The current in R2 is then equal to
1.24 V / R2, and the current in R1 is the current in R2 plus
the ADJ pin bias current. The ADJ pin bias current flows
from V OUT through R1 into the ADJ pin.
The output voltage can be calculated using the formula
shown in Figure 21.
NCP59302
VIN VOUT
+ +
to improve ripple rejection by bypassing the input of the
regulator, further improving the integrity of the output
voltage.
C IN
EN
GND
ADJ
R2
C OUT
47 m F,
Ceramic
Minimum Load Current
The NCP59302 regulator is specified between finite
loads. A 10 mA minimum load current is necessary for
proper operation.
V OUT + 1.24 V @ 1 )
R1
R2
) I ADJ @ R1
P D + V IN * V OUT @ I OUT ) V IN @ I GND
T J + T A ) P D @ R q JA
Enable Input
NCP59302 regulators also feature an enable input for
on/off control of the device. It’s shutdown state draws “zero”
current from input voltage supply (only microamperes of
leakage). The enable input is TTL/CMOS compatible for
simple logic interface, but can be connected up to V IN .
Overcurrent and Reverse Output Current Protection
The NCP59302 regulator is fully protected from damage
due to output current overload conditions. When NCP59302
output is overloaded, Output Current limiting is provided.
This limiting is linear; output current during overload
conditions is constant. The device is also capable to
withstand power ? on or enable start ? up with output shorted
to ground for the full Recommended Operating Conditions
range. These features are advantageous for powering
FPGAs and other ICs having current consumption higher
than nominal during their startup.
Thermal shutdown disables the NCP59302 device when
the die temperature exceeds the maximum safe operating
temperature.
When NCP59302 is disabled and (V OUT – V IN ) voltage
difference is less than 6.5 V in the application, the output
structure of these regulators is able to withstand output
Figure 21. Adjustable Voltage Operation
Thermal Considerations
The power handling capability of the device is limited by
the maximum rated junction temperature (125 ? C). The P D
total power dissipated by the device has two components,
Input to output voltage differential multiplied by Output
current and Input voltage multiplied by GND pin current.
(eq. 1)
The GND pin current value can be found in Electrical
Characteristics table and in Typical Characteristics graphs.
The Junction temperature T J is
(eq. 2)
where T A is ambient temperature and R q JA is the Junction to
Ambient Thermal Resistance of the NCP/NCV59302
device mounted on the specific PCB.
To maximize efficiency of the application and minimize
thermal power dissipation of the device it is convenient to
use the Input to output voltage differential as low as possible.
The static typical dropout characteristics for various
output voltage and output current can be found in the Typical
Characteristics graphs.
voltage (backup battery as example) to be applied without
reverse current flow.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| NCP59302DSADJR4G | 功能描述:低压差稳压器 - LDO 3A ADJ VLDO REGULATOR RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| NCP600 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:AC-DC Offline Switching Controllers/Regulators |
| NCP600MN130R2G | 功能描述:低压差稳压器 - LDO 150mA 1.3V LDO ENBLE RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| NCP600SN130T1G | 功能描述:低压差稳压器 - LDO 150mA 1.3V LDO ENBLE RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| NCP600SN150T1G | 功能描述:低压差稳压器 - LDO SBN BE VOLTAGE REG RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
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